Home / 1,289.29-1,932.60-508.23

Finding the Fourth Proportional to 1,289.29, 1,932.60 and 508.23

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Solution

The fourth proportional to 1,289.29, 1,932.60 and 508.23 is: 761.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.29 : 1,932.60 = 508.23 : x
  2. Step 2: Convert to fraction form
    1,289.29/1,932.60 = 508.23/x
  3. Step 3: Cross multiply
    1,289.29x = 1,932.60 × 508.23
  4. Step 4: Simplify right side
    1,289.29x = 982,202.76
  5. Step 5: Solve for x
    x = 982,202.76/1,289.29
  6. Step 6: Final answer
    x = 761.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.